Beat-adjuster for pendulums.



No. 629,370. Patented July 25, I899. H. D. KEELER.

BEAT ADJUSTER FOR PENDULUMS.

(Application filed Apr. 25, 1898.) 4 N o M 0 d e l UNITED STATES HARRYD. KEELER,

PATENT OFFICE.

OF MARION, OHIO.

BEAT-ADJUSTER FOR PENDULUMS.

SPECIFICATION forming part of Letters Patent No. 629,370, dated July 25,1899.

Application filed April 25, 1898.

T0 at whom it may concern:

Be it known that I, HARRY D. KEELER,a citizen of the UnitedStates,residing at Marion, in the county of Marion and State of Ohio,have invented certain new and useful Improvements in AdjustablePendulums for Clocks, of which the following is a specification.

My invention relates to adjustable pendulums for clocks, and has for oneof its objects to provide a pendulum which can quickly, easily, andsimply be adjusted when the clockcase is not plumb.

Another object of my invention is to provide a means of adjusting thependulum which is at once simple, strong, easily used, and applicable toany clock.

These objects I accomplish in the manner and by the meanshereinafterfully described in detail, and particularly pointed out inthe claims, reference being had to the accom pan ying drawings, in whichlike reference-letters indicate like parts in all the figures.

I Figure 1 is a front elevation of my invention on a clock with faceremoved. Fig. 2 is a top plan view of myinvention. Fig. 3 is a detailView of spring and arm. Fig. i.- is a detail view of plate and arm.

In the drawings accompanying this specification, A represents theclock-case; B, the front of clock, face removed; 0, theescapement-wheel; D, the escapement-lever; E, the verge -rod; F, thependulum -rod, which is hung in the usual manner bya flat spring at itsupper end, and G the clock-frame.

My invention consists of a plate H, in which a slot at is cuthorizontally for the arbor 19, carrying the hands of the clock, to move.From the top of the plate H an arm 0, made integral therewith or securedthereto, extends upward and is pivotally mounted on a collar c, risingfrom the frame G, around the spindle d of the escapement-wheel 0,between said escapement-wheel O and the clock-frame G. The arm 0 extendsabove the clock-frame G and is then bent backward at right angles andextends to midway the front and back of the clock-frame G, where the endof said arm 0 is bent upward. Pivoted at the back of the clock-frame Gon a collar 0 rising from the frame G around the end of theescapementwheel spindle d, is an arm e, which rises above theclock-frame G and is then bent Serial No. 678,786, (No model.)

forward at right angles toward said arm 0, to which it is secured abovethe center of the top of the clock-frame G, or the arm 0 may be bentupward over the center of the clockframeG and then carried back alongsuch bent-up portion and then to the back of the clock-frame G, where itis bent down and pivotally mounted on a collar 0 rising from the frameG, around the escapement-wheel spindle cl. A spring I has one endsecurely attached to the back of the clock-frame G, above which itrises, and is bent forward and the other end provided with saw-teeth andengaging the back of the up ward-bent portion of the arm 0. A loop .I issoldered to said spring I and has an armf projecting through theclock-face near the top and provided with a thumb-piece g. At the centerof the plate H, at the bottom, is a split post h, in which the flatspring at the upper end of the pend ulum-rod F is placed. To the plateH, above the slot a on the left, one end of an arm K is secured, saidarm K projecting upward to the left, having the escapement-lever Dpivotally secured on its otherend. To the plate I-I, above the slot aton the right, is secured a steel spring L, which prevents the verge-rodE from swinging outward.

The operation of myinvention is as follows: If the clock-case is for anyreason out of plumb, the thumb-piece g is pressed, removing thesaw-teeth of the spring I from cont-act with the arm 0. The pendulum M,being hung from the center of the plate II at the bottom, and the plateH suspended by the arm 0 from the collar 0, surrounding theescapementwheel spindle (Z, will adj ust itself as soon as the spring Iis released and carry the arm K and escapement-leverD with it in properrelative position.

Having thus described my invention,what I claim as new, and wish tosecure by Letters Patent, is

1. In a pend ulu m-clock,a forked arm astride the top of the clock frameand pivotally mounted on collars rising from clock'frame around theescapementwvheel spindle, said arm having an upright projection from thecenterof the crown of the fork, an oval plate made integral-with one endof said arm and provided with a horizontal curved slot, adapted toreceive the arbor carrying the hands of the clock, and a split post nearits lower part adapted to receive the flat spring at the upper end ofthe pendulum-rod, a spring secured to the back of the clock'frame andprovided at one end with saw-teeth adapted to engage said uprightprojection of said forked arm, an arm secured to the upper part of saidplate and carrying the escapement-lever and a spring secured to theupper part of said plate, said spring adapted to prevent the verge-rodfrom swinging outward, substantially as shown and described.

In a pendulunnclock provided with a plate pivot-ally mounted on a collarrising from the clock-frame around the escapementwheel spindle, saidplate carrying the arm on which the escapement-lever is mounted andhaving the pendulum suspended from it, a spring secured at one end tosaid clock-frame and provided with saw-teeth adapted to engage and holdsaid plate, substantially as shown and described.

In a pendulum-clock provided with a plate pivotally mounted on a collarrising from the clock-frame around the eseapementwheel spindle, saidplate carrying the arm on which the escapement-levcr is mounted andhaving the pendulum suspended from it, a spring secu red at one end tosaid clock-frame and provided with saw-teeth adapted to en gage and holdsaid plate, and means for operating the same, substantially as shown anddescribed.

I. In a pendulum-clock provided with a plate pivotally mounted on acollar rising from the clock-frame around the escapementwheel spindle,said plate carrying the arm on which the escapement-lever is mounted andhaving the pendulum suspended from it, a spring secured at one end tosaid clock-frame and provided with saw-teeth adapted to engage and holdsaid plate, a loop attached to said spring, said loop provided with anarm having a thumb-piece on its end, adapted to project through theclock-face and to control said spring, substantially as shown anddescribed.

In testimony whereof I hereto aifix my signature in the presence of twowitnesses.

E. T. BOYD, .T. B. VIRDEN.

